Author notes: This idea popped in my head when I WAS TRYING TO SLEEP. I couldn't ignore it, so I quickly wrote it (That's why it's so small)

I was talking with my friend about Yuuma and how he would act in a relationship so... this fanfic was born xD (And its Gumi x Yuuma because my friend is a huge shipper of that couple)

Disclaimer: I do not own Vocaloid... :3

Miku was reading at the moment but her doorbell rang, forcing her to stop and go open to the unexpected visitor. As soon as she opened the door, a very angry Gumi appeared. Gumi didn't say anything, she just walked inside, not caring whether Miku was busy or not. Miku sighed and led her to the living room.

"So, what did he do this time?" Miku asked indifferently as she sat down on her couch.

"You see," Gumi said as she too sat down on the couch. "We were out on a date, and he started looking at other women!" She exclaimed angrily. "He even had the nerve to whistle at one of them! How dares he!" She added as she punched the couch.

"And what do you expect me to do? Go slap him and tell him to look only at you or what?" Miku coldly said. It's not that she didn't want to help Gumi, it's just that this happens all the time and its annoying Miku to no end. And she was also reading and she has to finish soon.

"No! I didn't say that…" Gumi quietly said, quite surprised by Miku's tone.

"You know what? I think Yuuma is doing all that in order to make you jealous."

"You think?" Miku nodded.

"And I also think that you need to teach him a lesson."

"You're right…"

They both started thinking of ways to punish Yuuma for being such a jerk. Gumi made some suggestions and Miku immediately shot them down, saying that it's not enough. After thinking hard, Miku had an idea.

"How about you do the same as he does? Let him see how it feels to see your lover hit on other people while you're there." She suggested and Gumi grinned.

"That's perfect Miku! You're a genius!" She stood up, hugged Miku and immediately rushed out of Miku's apartment. Miku sighed and went to close the door which Gumi left open. She went back into her room and continued studying.

30 minutes later she got a message from Gumi:

Miku! ^_^ Your plan worked! COMPLETE SUCCESS! Right now, he's outside my home begging me to let him in and he's apologizing all the time, saying he will never do that again. Should I let him in or not? :3

Miku grinned and wrote her reply:

Of course not! Just ignore him and pretend you don't hear him or something. He deserves it :D

2 minutes later, Gumi replied:

Huhuhu, you're evil, Miku-sama. I like that. *evil laugh* Anyway, I'll do that! Thanks for the help, sis :3

Miku sighed and threw her phone on the bed. She then, once again, started reading. She really didn't have time for their quarrels right now. She had to finish preparing for her Ancient Greek exams before Luka comes back from work. Which means… she had only 45 minutes.

She sighed again and tried her best to concentrate.

'I really can't believe that I'm wasting my time helping those two idiots instead of reading… Jeez… I really hope I'll make it on time… I don't want Luka to find me reading…'

-Review? :3